EP 4253088 A1 20231004 - MOTORCYCLE TIRE
Title (en)
MOTORCYCLE TIRE
Title (de)
MOTORRADREIFEN
Title (fr)
PNEU DE MOTOCYCLETTE
Publication
Application
Priority
- JP 2022052535 A 20220328
- JP 2022170521 A 20221025
Abstract (en)
Provided is a motorcycle tire, that provides excellent steering stability while using steel cords as a belt layer material, which comprises a carcass extending from a tread portion to a bead core of a bead portion via a sidewall portion, and a belt layer arranged outside the carcass and inside the tread portion in the tire radial direction, wherein the belt layer is a steel belt layer having steel cords; the steel cord is a steel cord having an m × n configuration in which n strands, formed by twisting m steel filaments, are twisted together in the same direction as the steel filaments, and the m is 1 or more and 3 or less and n is 2 or more and 6 or less; the diameter of the steel filament is 0.15 mm or more and 0.25 mm or less; the rubber composition forming the tread portion is a rubber composition having a complex elastic modulus E* (MPa) of 5.0 MPa or more; and the product (S × E*) of the total cross-sectional area S(mm<sup>2</sup>) of the steel filaments in the cross section of the steel cord and the complex elastic modulus E* (MPa) is 2.00 or less.
IPC 8 full level
B60C 9/18 (2006.01); B60C 1/00 (2006.01); B60C 9/00 (2006.01); B60C 11/00 (2006.01)
CPC (source: EP US)
B60C 1/0016 (2013.01 - EP); B60C 9/0007 (2013.01 - US); B60C 9/1821 (2013.01 - EP); B60C 9/18 (2013.01 - US); B60C 2009/0014 (2013.01 - EP); B60C 2009/0078 (2013.01 - US); B60C 2009/0092 (2013.01 - EP); B60C 2011/0025 (2013.01 - EP); B60C 2200/10 (2013.01 - EP US)
Citation (applicant)
- JP 2014172548 A 20140922 - SUMITOMO RUBBER IND
- JP H0563000 B2 19930909 - CSELT CENTRO STUDI LAB TELECOM
- JP 2010111753 A 20100520 - SUMITOMO RUBBER IND
- US 4414370 A 19831108 - HAMIELEC ARCHIE E [CA], et al
- JP S596207 A 19840113 - JOHNSON & SON INC S C
- JP H0558805 B2 19930827 - NIPPON STEEL CORP
- JP 2007313522 A 20071206 - NISSAN MOTOR
- US 5010166 A 19910423 - SCHOLSKY KEVIN M [US], et al
- TOA SYNTHETIC RESEARCH ANNUAL REPORT TREND2000, no. 3, pages 42 - 45
Citation (search report)
- [A] JP 6855699 B2 20210407
- [A] JP 2021130449 A 20210909 - SUMITOMO RUBBER IND
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 23163552 A 20230322; US 202318126227 A 20230324